The slimline pro is a wider and heavier version of the regular 7mm slimline style. The gel-writer pen features a Parker style click mechanism while the mechanical pencil mechanism is a super-feed click 0.7mm refill. The wood chosen for this is a walnut and aspen in a checkerboard pattern. Hardware accents are brushed satin and the mechanical pencil features an eraser in the plunger cap. Specifications: Mechanical Pen/Pencil: Weight: 25 grams (pen), 26 grams (pencil) Length: 140mm (pen), 146mm (pencil) Diameter: 11 mm (both) Refill: Parker Gel-Writer (pen), 0.7mm graphite (pencil) Plating: Brushed Satin Wood: Walnut and Aspen Segmented